Robert porter frist



(No Model.) v

R. P. FRIST.

ART 0F AND APPARATUS PoR MAKING PARGHMBNTIZED FIBER TUBES. No.'4'79,263.Patented July 19, 1892.

nl 'Il I,

Zay @u SLM hW+WvALA- @Hoff/14u10 UNITED STATES PATENT OFFICE.

ROBERT PORTER FRIST, OF WILMINGTON, DELAVARE, ASSIGNOR TO THE DELAWAREHARD FIBRE COMPANY, OF SAME PLACE.

ART F AND APPARATUS FOR MAKING PARCHMENTlZED-FIBER TUBES.

SPECIFICATION forming part of Letters Patent No. 479,263, dated July 19,1892.

Application filed November 23, 1891. Serial No. 412,843. (No model.)

T0 @ZZ whom it may con/cern:

Be it known that I, ROBERT PORTER FRisT, a citizen of the United States,residing at Wilmington, in the county of New Castle and State ofDelaware, have invented certain new and useful Improvements inthe Art ofand Apparatus for Making Parchmentized, Vulcanized, or I-Iard FiberTubes, of which art and apparatus the following is a specification.I'Ieretofore tubes of the character described have been made of paperWound on-a mandrel after having been treated in a chemical ortransforming bath and While moist. I have encountered some difficulty inmaking sp1- rally-wound tubing in this manner, owing to the liability ofthe moist paper to .break under the strain incident to the winding.

The object of my invention is to obviate this and other practicaldii'iiculties encoun- 2o tered in the manufacture of such fiber tubing,which end I attain by Winding strips of dry untreated paper of requisitewidth spirally in tubular form, with closely abutting or overlappingedges, and then immersing or subz 5 merging the papei' tube thus formedin a chemical transforming-bath of suitable well` knownconstituents-such, for instance, as chloride of zinc. This immersion ofthe paper in the transforming-bath may bedone in 3o various ways, eitheras the strip is being wound into tubular form or successively as eachlayer is applied.

The acompanying drawings respectively represent vertical longitudinalcentral sec- 3 5 tions through so much of two different forms ofapparatus adapted for carrying out my invention as is necessary toillustrate the subject-matter claimed.

Figure 1 -shows the transforming bath or 4o uid as contained in a tankA, provided at each end With an elastic packing-ring or annular gate BB', through which a mandrel C passes below the normal level of thetransforming-bath. Strips or ribbons of dry paper of suitable width andconstitution are wound spirally upon the mandrel at a proper angle toform a tube, with closely abutting or overl in@ ed es.

apheie ari various Ways in which the man- 5o drel may be rotated and fedforward. The

and needs no further description.

mechanism shown for this purpose consists of a stationary screw-shaft D,mounted in standards d and carrying a gear-wheel E, which as it rotatesmoves longitudinally on the shaft. The wheel E gears with a cog-wheel F,mounted in a frame F which also carries a cogwheel I-l, to which themandrel is secured. The Wheel F has asquare bore, through which a squareshaft I-I, carrying a pulley h, eX- tends. When the pulley is revolved,a rotary 6o motion is given to the wheels F, E, and H and to themandrel, and a forward movement of all the wheels and the frame iseffected.

The operation of the mechanism is obvious,

The organization shown is such that the man- D drel is simultaneouslyrotated and fed foi'- Ward endwise through the tank. The strips areWound on the mandrel outside the tank, and they are fed forward thereonand therewith through the elastic packing-rings or annularentrance-gates B and out through the discharge-gates B', the gatesyielding sufficiently to permit their passage. Any leakage of the baththrough these gates is caught in a drip-pan A. After traversing the baththe mandrel, with the tube thereon, goes through an eye or ring F orpasses between pressing-rolls G G', having semicircularlygroovedperipheries, which compress and con- 8o solidate the tube, which isafterward treated and finished in Well-known ways.

Fig. 2 shows an apparatus substantially similar to that delineated inFig. 1, except that the tanks are duplicated and a single layer is Woundupon the mandrel, passed through the first bath A, an additional stripthen Wound upon this treated strip,and the whole then passed through thesecond bath A2 and then through the eye and rollers, as above described.

Like parts are correspondingly lettered in both figures.

The apparatus, unless otherwise indicated, being of usual approvedconstruction and op- 95 eration, needs no detailed description.

The operation of the apparatus will readily be understood from theforegoing description.

Another application filed simultaneously herewith by Charles G. Rupertand myself, roo

Serial N o. 412,855, shows methods of forming parchmentized-fiber tubesby pouring, forcing, rolling, or brushing the transforming fiuidthereon,` iu contradistinction to immersing them therein, as hereinclaimed.

I do not therefore claim herein any process not involving immersing orsubmerging the tubes in the bath or transforming Huid.

What I claim herein as new and as of my own invention is- 1. Thehereinbefore described improvement in the art of makingparchmentizedfiber tubes, which improvement consists in winding a stripof dry or untreated paper spirally into tubular form, with closelyadjacent edges, converting the tube into parchmentized ber by passing itas fast as formed through a transforming bath, and then cousolidatingthe tube thus formed and treated into a homogeneous fabric by pressure.

2. The hereinbefore described improvement in the art of makingparchmentizedfiber tubes, Which improvement consists in winding a stripof dry or untreated paper spirally into tubular form, with closelyabutting or overlapping edges, immersing the tube thus formed in atransforming-bath, winding a second strip of dry or untreated paper onthe treated tube, and passing both the treated and untreated layers orconvolutions through a second transforming-bath.

3. The combination, substantially as hereinbefore set forth, of atankfor containing a transforming-bath, a mandrel, means for revolvingit below the surface of the transforming-bath, for traversing it endwisetherethrough, for winding a strip of dry or untreated paper thereon, andfor carrying its convolutions through the bath to be acted upon therebyas fast as formed, and means for consolidating the transformed fabricinto a homogeneous structure.

4. The combination, substantially as hereinbefore set forth, of aseriesof transformingbaths, a mandrel, lneans for rotating and traversing itendwise through the baths and for winding a strip of dry or untreatedpaper thereon and for passing it through one of the baths, and means forwinding a second strip upon the first after passing through the firstbath and for passing both strips through the succeeding bath,for thepurposes described.

5. The combination, substantially as hereinbefore set forth, of atransforming tank or bath, a mandrel, means for rotating it, for Windinga strip thereon, and for moving both the mandrel and strip endwisethrough the bath, and gates or valves through which the shaft, with thestrip Wound thereon, passes to subject it to the action of the bath.

6. The combination, substantially as hereinbefore set forth, of atransforming tank or bath, a rotating mandrel movable endwisetherethrough, elastic or yielding gates in the tank, through which themandrel passes, together with the paper wound thereon, and means, suchas eyes or grooved rollers, for

consolidating the tube as it emerges from the bath.

7. The combination, substantially as hereinbefore set forth, of a seriesof a transforming tanks or baths, a rotating mandrel movable endwisetherethrough, elastic or yielding gates in the tanks through which themandrel passes, together with the paperwound thereon, and means, such aseyes or grooved rollers, fcr consolidating they tube as it emerges fromthe bath, whereby a strip of dry or untreated paper may be Wound uponthe mandrel, passed through the bath, successive strips or layers ofuntreated paper Wound thereon, and the Whole passed through another bathand consolidated after emerging therefrom.

In testimony whereof I have hereunto subscribed my name.

ROBERT PORTER FRIST.

Witnesses:

HENRY J. CRIPPEN, D. B. JONES.-

